Asynchronous MQTT (Peter Hinch version) large data

[nastiliano]

Hello everybody.

If I publish only 3 JSON string all works great. But, for example, with this code:

from mqtt_as import MQTTClient, config #type:ignore
import asyncio
import json

#Local configuration
config["ssid"] = "SSID"
config["wifi_pw"] = "PASSWORD"
config["server"] = "MY_MOSQUITTO_SERVER"
config["port"] = "1883"
config['mqttv5'] = True

def callback(topic, msg, retained, properties=None):  # MQTT V5 passes properties
    print((topic.decode(), json.loads(msg.decode()) , retained))

async def conn_han(client):
    await client.subscribe('foo_topic', 1)

async def main(client):
    await client.connect()
    n = 
json.dumps(["ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii 
ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                    "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii 
ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                    "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii 
ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                    "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii 
ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                    "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii 
ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ssxsxsxssxsxsxsxsacdlñdjdñlfksfhñdsfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii" ,
                "ACK"
                ]).encode()
while True:
    await asyncio.sleep(5)
    print('publish', n)
    #If WiFi is down the following will pause for the duration.
    await client.publish('foo_topic', n , qos = 1)

config['subs_cb'] = callback
config['connect_coro'] = conn_han

MQTTClient.DEBUG = True  # Optional: print diagnostic messages
client = MQTTClient(config)
try:
    asyncio.run(main(client))
finally:
    client.close()  # Prevent LmacRxBlk:1 errors

Then the message is theorically published but the execution remains stuck (idle)

Could you give me some explanation? Is the a data limit? Should i config my mosquitto server?

Thank you very much.

[peterhinch]

See this discussion.

tl;dr There is no practical limit. One user has substantial experience in a commercial environment with very long messages. The various possible causes of problems are discussed in the thread.

[nastiliano]

Mmmm.... ok

But I see that nobody in the threat have a solution.
Simply fails when the data is large...

Thank you very much.

[Josverl]

Simply fails when the data is large...

That is an incorrect and unfounded conclusion.

[t-m-cor]

Mmmm.... ok

But I see that nobody in the threat have a solution. ..

Are we reading the same thread ?

I read, that no-one could reproduce the problem, on the contrary it is demonstrated, that it still runs with even larger publish's.

And the original poster admits, that he still has the problem without using any mqtt library.

If you want someone to look into a problem, you have to describe how to reproduce it (as simple as possible).

.. Simply fails when the data is large...

This thread is named "Asynchronous MQTT..", it has been tested without reproducing the reported behaviour, when using mqtt (in the referred thread). And it has been admitted, that the problem seems to exist for the OP, without using mqtt library.

[julian-gpsdk]

Then the message is theorically published but the execution remains stuck (idle)

Could you give me some explanation? Is the a data limit? Should i config my mosquitto server?

Thank you very much.

can you try using a version of micropython before RPI_PICO_W-20240602-v1.23.0.uf2 on the Pico W 1 and tell us if it works for you?

[nastiliano]

Hello.

I'm using a ESP32 device, no a PICO based device and I'm using latest @peterhinch code and latest micropython firmware (1.24.1).

Thanks. Best regards